Population Sampling and Biased

What does representativeness mean in sampling?

• Representativeness refers to the size of the sample being large enough.

• Representativeness means selecting a sample randomly without any criteria.

• Representativeness indicates that the sample is taken from a single demographic group.

• Representativeness means that a sample accurately reflects the characteristics of the population.

Answer explanation

Representativeness means that a sample accurately reflects the characteristics of the population, ensuring that the findings can be generalized. This is crucial for valid research outcomes.

Why is random sampling important for generalization?

• Random sampling is only necessary for small populations.

• Random sampling guarantees accurate results without bias.

• Random sampling is irrelevant to the research process.

• Random sampling is important for generalization because it creates a representative sample that reduces bias.

Answer explanation

Random sampling is crucial for generalization as it ensures the sample reflects the larger population, minimizing bias and allowing for more accurate conclusions about the entire group.

What is the main goal of using stratified sampling?

• To increase the sample size significantly.

• To focus solely on the largest subgroup.

• To ensure representation of specific subgroups in the sample.

• To eliminate all biases in sampling.

Answer explanation

The main goal of stratified sampling is to ensure representation of specific subgroups in the sample. This method allows researchers to capture the diversity within a population, leading to more accurate and reliable results.

The set of all people or objects whose properties are to be described and analyzed by the data collector.

• population

• sample

• random sample

• representative sample

A musician wanted to see what people who bought his last album thought about the songs.
Which choice best represents a sample?

• Every person who bought the album.

• A selection of people who didn't want to buy the album.

• 250 girls who bought the album.

• A selection of 3,294 people who bought the album.

Population or Sample?

A factory overseer selects 40 threaded rods at random from those produced that week at the factory, then she tests their tensile strength.

• Population

• Sample

Complete the definition:

A _________ consists of all subjects (human or otherwise) that are being studied

• Statistics

• Number

• People

• Population

• Pueblo

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which sampling method involves dividing the target population into subgroups and selecting participants from each subgroup in proportion to their representation in the population?

• Random sampling

• Stratified sampling

• Convenience sampling

• Systematic sampling

Which sampling method relies on participant referrals and is beneficial for studying hidden populations?

• Random sampling

• Stratified sampling

• Convenience sampling

• Snowball sampling

Which sampling method allows researchers to reach hidden populations that may be difficult to access through traditional methods?

• Random sampling

• Stratified sampling

• Convenience sampling

• Snowball sampling